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How do I use a shared library from Kotlin/Native? All tutorials are for creating a shared library, not using one. I created a `.def` file, seems to work, I have autocompletion of library functions, project compiles, but fails when linking. I have a compiled `.so` file for the library, but cannot find how to make my project use it.

Got it, in the `.def` file I needed to add `linkerOpts = -Lsrc/nativeInterop/cinterop -l wiringPi`, having `libwiringPi.so` in that path. The filename of the `.so` file is related to the `-l` option, but `lib` is cut from the name. Also I had it as `libwiringPi.so.2.46`, the version number at the end of the filename was a problem.

Also adding `-R .` to `linkerOpts` actually made it find the `.so` file when the executable is run, when the `.so` file is distributed along the executable in the same directory.

The changes you have made to `linkerOpts` will work in development via Gradle, but will not work when the program is run in production via the terminal.

It works though, in fact I cannot run the program in any other way than "in production", because I run it on a remote Raspberry Pi, I cannot run locally on my dev machine because the architecture does not match, I cross-compile for the Pi.

Hello, <@U6Q6FJHT6>! Can you clarify, is this `.so` file a product of some Kotlin/Native code compilation or not?

<@UJRUJP0F9> It's a C library I compiled on a Raspberry Pi, resulting in the `.so` file. I am dynamically linking to it from my Kotlin/Native project, which I am cross-compiling from a Linux host to the Raspberry Pi. It was easy to setup with making a `.def` file to get the Idea to recognize it and it was compiling, but  failed linking, which I had a hard time understanding how to fix. It's all working now though, as I said above.

I've stumbled upon this thread while trying to understand why I can't get Kotlin Native to link to a Pi linux library (in this case, `libcurl`). IntelliJ understands the headers, I think compiling works, but linking fails, Ultimately I want to be doing something similar to you, linking to `wiringPi`or a similar library. How did you solve your linking problems?

I don't really remember what I did, it was a year ago, but I am happy to link you the repo of my project, where it all works.

<https://gitlab.com/Nohus/football-table>
Might be outdated now, with the fast paced development of Kotlin, I haven't been updating it since the project is finished and does it's job. Should take you on the right path though.

Thank you for replying, I'll definitely check it out. Did you build in directly on the Pi, or from another machine?

I built wiringPi directly on the Pi to get the .so library. But the actual software I cross-compiled on a Linux machine.